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AT24C21 - 2-Wire Serial EEPROM

General Description

The AT24C21 provides 1024 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 128 words of 8 bits each.

The device is optimized for use in applications requiring data storage and serial transmission of configuration and control information.

Key Features

  • 2-wire Serial Interface.
  • Schmitt Trigger, Filtered Inputs For Noise Suppression.
  • DDC1™/ DDC2™ Interface Compliant for Monitor Identification.
  • Low-voltage Operation.
  • 2.5 (VCC = 2.5V to 5.5V).
  • Internally Organized 128 x 8.
  • 100 kHz (2.5V) Compatibility.
  • 8-byte Page Write Mode.
  • Write Protection Available.
  • Self-timed Write Cycle (10 ms max).
  • High Reliability.
  • Endurance: 1 Million Write Cycles.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Features • 2-wire Serial Interface • Schmitt Trigger, Filtered Inputs For Noise Suppression • DDC1™/ DDC2™ Interface Compliant for Monitor Identification • Low-voltage Operation – 2.5 (VCC = 2.5V to 5.5V) • Internally Organized 128 x 8 • 100 kHz (2.5V) Compatibility • 8-byte Page Write Mode • Write Protection Available • Self-timed Write Cycle (10 ms max) • High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years • 8-lead PDIP and 8-lead JEDEC SOIC Packages Description The AT24C21 provides 1024 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 128 words of 8 bits each. The device is optimized for use in applications requiring data storage and serial transmission of configuration and control information.